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IT Stuff - Coggle Diagram

- - - - Continuous merge
      - Auto test
    - - Build & Test
      - Acceptance
      - Production
- - - - Response Codes
        
        4XX - Client error
        
        5XX - Server error
        
        1XX - Information
        
        3XX - Redirection
        
        2XX - Success
      - Approaches
        
        Bolt-On
        
        building on
        existing system
        
        Greenfield
        
        API-first,
        for new system
        
        Facade
        
        changing existing
        system step-by-step
    - - protobuf
        
        import standard types
        
        define new needed types
        
        define messages
        (request and response)
        
        define service and
        it's methods inside
        
        methods can contain
        stream options
        
        types translate into needed
        language with mapping
        
        you can't reassign a
        parameter - only add new
    - - Layer between client and server
      - Queries in request
      - Interaction types
        
        POST
        
        Mutation
        
        Query
        
        WebSockets
        
        Subscription
  - - - AMQP
        
        frame
        
        binary
      - exchange
        
        direct
        
        fanout
        
        topic
        
        headers
    - - producer
      - consumer
      - broker
        
        topic
        
        partition
      - log streaming
- - - - device
      - environment
      - feelings
    - - Learnability
      - Efficiency
      - Memorability
      - Errors
      - Satisfaction
  - - - Stages
        
        awareness
        
        consideration
        
        purchase
        
        retention
      - Levels
        
        needs
        
        action
        
        touchpoint
        
        thoughts
        
        problems
        
        opportunities
    - - DAU
      - MAU
      - Customer
        Acquisition Cost
      - Retention Rate
      - ARPU
      - LTV
  - - - Reach
      - Income
      - Confidence
      - Ease
- - - - SSO (single sign-on)
      - profile sharing
        
        via ID tokens
    - - iss - issuer
      - iat - issued at
      - sub - subject
      - aud - audience
      - exp - expiration